40865134464 has 864 divisors, whose sum is σ = 156013341120. Its totient is φ = 10218700800.

The previous prime is 40865134459. The next prime is 40865134481. The reversal of 40865134464 is 46443156804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 211736352 + ... + 211736544.

Almost surely, 2^40865134464 is an apocalyptic number.

40865134464 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40865134464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78006670560).

40865134464 is an abundant number, since it is smaller than the sum of its proper divisors (115148206656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40865134464 is a wasteful number, since it uses less digits than its factorization.

40865134464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280 (or 247 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 45.

The spelling of 40865134464 in words is "forty billion, eight hundred sixty-five million, one hundred thirty-four thousand, four hundred sixty-four".